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A pendulum consists of a mass less, rigid rod with a mass at one end. The other end is pivoted on a frictionless pivot so that it can turn during a complete circle. The pendulum is inverted, therefore the mass is directly above the pivot point, and then released. The speed of the mass as it passes during the lowest point is 3.5m/s.
If the pendulum undergoes small-amplitude oscillations at the bottom of the arc, what will the frequency be?
The Sun is approximately a sphere of radius 6.963 105 km, at a mean distance a = 1.496 108 km from the Earth. The solar constant, the intensity of solar radiation at the outer edge of Earth's atmosphere, is 1370. W/m2. Assuming the Sun radiates as a ..
A 21.3 kg object is pushed down a 26.3 cm long inclined plane that makes an angle of 15.7 degrees with the horizontal at a constant velocity. If the coefficient of kinetic friction is 0.35, then what is the work done by friction on the object? Assume..
a boy throws a 2 kg rock at a 5 kg block of styrofoam that hangs by a 3 m long rope attached to a tree branch. when the
a closed Gaussian surface in the shape of a cube of edge length 3.35 m. What is the net charge (in Coulombs) contained by the cube
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The magnitude of the electrostatic force between two identical ions that are separated by a distance of 5.0 10-10 m is 8.28 10-9 N. What is the charge of each ion
A typical ten-pound car wheel has a moment of inertia of about 0.35kg?m2. What is the rotational kinetic energy K of the rotating wheel
A student sits on a freely rotating stool holding two weights, each of mass 2.90 kg. When his arms are extended horizontally, Find the new angular speed of the student
an engine, a piston oscillates with simple harmonic motion so that its position varies according to the expression, x = 3.00 cos 3t + ? divide by 4, Find the period and amplitude of the motion
a bat flies toward a wall emitting a steady sound with a frequency of 24.0 . this bat hears its own sound plus the
a charge of 3.10?c is held fixed at the origin. a second charge of 3.10?c is released from rest at the position 1.25 m
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